CN103712762B - Danger medium tank case impulse test simulation medium placement method - Google Patents
Danger medium tank case impulse test simulation medium placement method Download PDFInfo
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- CN103712762B CN103712762B CN201310619390.6A CN201310619390A CN103712762B CN 103712762 B CN103712762 B CN 103712762B CN 201310619390 A CN201310619390 A CN 201310619390A CN 103712762 B CN103712762 B CN 103712762B
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- 238000012360 testing method Methods 0.000 title claims abstract description 46
- 238000004088 simulation Methods 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000012530 fluid Substances 0.000 claims abstract description 32
- 230000005484 gravity Effects 0.000 claims abstract description 28
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims description 46
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 239000004677 Nylon Substances 0.000 claims description 5
- 239000006260 foam Substances 0.000 claims description 5
- 229920001778 nylon Polymers 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 5
- 239000000725 suspension Substances 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 2
- 238000012797 qualification Methods 0.000 claims description 2
- 238000009666 routine test Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000010998 test method Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 8
- 239000000383 hazardous chemical Substances 0.000 description 6
- 230000001186 cumulative effect Effects 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000009863 impact test Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
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Abstract
The invention discloses a kind of danger medium tank case impulse test simulation medium placement method, belong to test method field, the technical scheme adopted is a kind of danger medium tank case impulse test simulation medium placement method, with the model fluid of safety and low-density object Homogeneous phase mixing fill into test tank case with etc. quality, equal-volume, etc. the presence of simulated hazard medium when carrying out tank box structure intensity routine test of center of gravity.Beneficial effect of the present invention is that the dynamic motion situation substituted in danger medium full-scope simulation impulse test with cheap, safe simulation medium is carried out, and effectively ensure that the authenticity of simulation test, security, also significantly lower in experimentation cost.
Description
Technical field
The present invention relates to a kind of method of liquid when adopting transportation by railroad to jar special box structure intensity detection that be inflammable, explosive or serious environment pollution.Substitute with simulation medium the concrete grammar that high-risk medium carries out in impulse test process when being specifically related to this routine test.
Background technology
In recent years, along with the sustained and rapid development of national economy, society expands year by year to the demand of all kinds of hazardous chemical, and the accident quantity occurred in hazardous materials transportation process also presents the trend obviously risen.But well-known, hazardous chemical has the characteristics such as inflammable, explosive, poisonous and deep-etching, once there is shipping accident, is the great disaster of a kind of harmfulness, causes huge Loss of Life and property to many places.
For preventing the generation of accident in hazardous materials transportation process, reduce the harm caused due to hazardous materials transportation, mechanism of relevant departments has all carried out strict regulation to transportation system, dangerous material storage device, travel position detection system.Ministry of Railways's correlation standard, the need of the closed railroad car applied in railway operation carry out dynamic impact test.Still belong to new things as LNG carries out transportation by railroad, and belong to low-density, dangerous material, the LNG of tens tons is actual be filled with after carry out impulse test danger subsidiary very large beyond doubt.Unique method carries out impulse test again after adopting simulation medium filling to substitute LNG.
But, replace above-mentioned dangerous material with other media, also there are some difficulties.Water or liquid nitrogen, as safely, be easy to get and the fluent meterial of cheapness, it is desirable test(ing) medium, but because density difference is very far away, be difficult to realize in simulation test with dangerous material medium etc. the heights of C.G. such as weight, must there is deviation in the actual forced status of tank case or tank car, can not actual response actual loading situation, simulation Impulse Test Result like this is difficult to react actual effect, and tank case or tank car production unit and applying unit all cannot accept.To transport tank case or the tank car of LNG medium, the density of water is 2.4 times of LNG, and the density of liquid nitrogen is 2 times of LNG, by waiting charge weight to test, the principle of height of C.G. such as cannot to meet; Fill by isometric(al) and test, though the principle of height of C.G. such as can to meet, but when medium-weight and operation, medium fills quality and differs again larger during test, the stress of tank case or tank car must change, can not actual response actual loading situation, causes analog distortion, test figure is insincere, estimate inaccurate to actual conditions, the danger caused thus is difficult to estimate, also makes safe design standard to depart from reality.
Therefore safety, desirable medium is selected, adopt suitable medium charge method, to ensure authenticity that impulse test simulates, security, having vital role to the estimation of Transportation of Dangerous Chemicals risk, accident early warning and emergency management and rescue decision-making, is the research emphasis in hazardous materials transportation field.
Summary of the invention
The present invention relates to dangerous material, mainly under liquid state, a kind of analogy method adopted when accumulating tank case used carries out structural strength routine test.The method adopt the security medium Homogeneous phase mixing of two kinds of different densities fill into test tank case with the quality such as simulation, equal-volume, etc. the high-risk medium presence of center of gravity, not only can go out the data of impulse test but also can security be guaranteed by actual response as the impulse test process of model and result.
The present invention is the technical scheme that true, safe simulated hazard media impingement test adopts is that a kind of placement method of danger medium tank case impulse test simulation medium, said method comprising the steps of:
1) determine to participate in the mass M adding danger medium needed for test
0, proportion ρ
0with volume V
0;
2) determine to be filled with mass M in detected tank case
0danger medium time liquid level H
0with center of gravity H
whighly, and make liquid level markings;
3) choose two kinds of security medium Homogeneous phase mixing to be filled in tested tank case, wherein two media is respectively proportion ρ
2> ρ
0model fluid and N number of volume be V
1, be immersed in mean specific gravity ρ in model fluid
1< ρ
0low-density object, concrete operations are as follows:
The 3.1 total number N=(ρ confirming to submerge required low-density object in model fluid
2-ρ
0) V
0/ (ρ
2-ρ
1) V
1;
N number of low-density object to be connected into n string by rigging by 3.2 respectively, is positioned at often going here and there tail bottom tank case, forms N number of, n and goes here and there the pre-determined bit of low-density object bottom tank case;
3.3 inject model fluid until liquid level reaches step 2 in tank case) described in bench margin line, all low-density object even suspension are under model fluid liquid level.
In technique scheme, first determine to participate in the mass M adding danger medium needed for test
0, proportion ρ
0with volume V
0, calculate and determine the liquid level H of be filled with medium
0with center of gravity H
wposition, and liquid level markings are made in tank case; Then choose two kinds of security mediums according to physical condition, one is proportion ρ
2> ρ
0model fluid, another kind is N number of low-density object, and the volume of each object is V
1, and described low-density object is being immersed in mean specific gravity ρ after in model fluid
1< ρ
0, filled in tested tank case by the hybrid analog-digital simulation stuff Homogeneous phase mixing that two media is formed, concrete operations are: first, based on stuff general assembly (TW) and cumulative volume all with specified danger medium weight M
0, volume V
0identical, quality, the volume of rigging can be ignored relative to system, then have N × ρ
1× V
1+ ρ
2× V
2=M
0and N × V
1+ V
2=V
0, combined calculation obtains the required total number N=(ρ of low-density object
2-ρ
0) V
0/ (ρ
2-ρ
1) V
1; Then according to the size of liquid level and low-density object, by rigging, N number of low-density object is connected into n string respectively, total length of often going here and there all is less than liquid level value, is fixed on bottom tank case by the string tail of often going here and there, and it is that the low-density object of N defines pre-determined bit bottom tank case that n goes here and there total number; Finally, model fluid is injected in tank case, until its liquid level reaches step 2) in the liquid level markings made, density due to low-density object is less than model fluid and the cascaded structure that low-density object is formed often is gone here and there total length and is all less than liquid level value, now low-density object is uniformly suspended under the liquid level of model fluid, fills complete.
The invention has the beneficial effects as follows: (1) the present invention devises the placement method filling medium when tank filling case carries out tank box structure intensity routine test using the liquid of safety and low-density object as simulation medium Homogeneous phase mixing, meet the quality such as the reflection of the simulation medium authentic security of filling, equal-volume, etc. the presence of danger medium of center of gravity, that one is simulated in all directions, ensure that authenticity and the security of simulation test, and method simple practical; (2), in further improved plan, add accurate adjustment step or the accurate filling distribution controlling low-density object, be conducive to the further raising testing accuracy; Simulation medium selects cheapness, the water be easy to get or liquid nitrogen, foam etc., effectively reduces the cost of simulation test.
Below in conjunction with accompanying drawing, the present invention is described in detail.
Accompanying drawing explanation
Figure 1A is the schematic diagram of low-density object of the present invention and model fluid filling;
Figure 1B is the right view of Figure 1A;
Fig. 2 is structure and the connection diagram of low-density object;
Fig. 3 is vacuum cup structural representation;
In accompanying drawing, 1 represents low-density object, 2 representative simulation liquid, and 3 represent pack hole, and 4 represent tank body, and 5 represent vacuum cup, and 6 represent nylon cord, and 7 represent latch closure, and B represents bench margin line, and C represents reticule.
Embodiment
embodiment 1
The present invention relates to a kind of medium charge method of danger medium tank case impulse test full-scope simulation, said method comprising the steps of:
1) determine to participate in the mass M adding danger medium needed for test
0, proportion ρ
0with volume V
0;
2) determine to be filled with mass M in detected tank case
0danger medium time liquid level H
0with center of gravity H
whighly, and make liquid level markings B;
3) choose two kinds of security medium Homogeneous phase mixing to be filled in tested tank case, wherein two media is respectively proportion ρ
2> ρ
0model fluid 2 and N number of volume be V
1, be immersed in mean specific gravity ρ in model fluid 2
1< ρ
0low-density object 1, concrete operations are as follows:
The 3.1 total number N=(ρ confirming to submerge required low-density object 1 in model fluid 2
2-ρ
0) V
0/ (ρ
2-ρ
1) V
1;
N number of low-density object 1 to be connected into n string by rigging by 3.2 respectively, is positioned at often going here and there tail bottom tank case, forms N number of, n and goes here and there the pre-determined bit of low-density object 1 bottom tank case;
3.3 inject model fluid 2 until liquid level reaches step 2 in tank case) described in bench margin line B, all low-density object 1 even suspension are under model fluid 2 liquid level.
In technique scheme, first determine to participate in the mass M adding danger medium needed for test
0, proportion ρ
0with volume V
0, calculate and determine the liquid level H of be filled with medium
0with center of gravity H
wposition, and liquid level markings are made in tank case; Then choose two kinds of security mediums according to physical condition, one is proportion ρ
2> ρ
0model fluid, another kind is N number of low-density object, and the volume of each object is V
1, and described low-density object is being immersed in mean specific gravity ρ after in model fluid
1< ρ
0, filled in tested tank case by the hybrid analog-digital simulation stuff Homogeneous phase mixing that two media is formed, concrete operations are: first, based on stuff general assembly (TW) and cumulative volume all with specified danger medium weight M
0, volume V
0identical, quality, the volume of rigging can be ignored relative to system, then have N × ρ
1× V
1+ ρ
2× V
2=M
0and N × V
1+ V
2=V
0, combined calculation obtains the required total number N=(ρ of low-density object
2-ρ
0) V
0/ (ρ
2-ρ
1) V
1; Then according to the size of liquid level and low-density object, by rigging, N number of low-density object is connected into n string respectively, total length of often going here and there all is less than liquid level value, is fixed on bottom tank case by the string tail of often going here and there, and it is that the low-density object of N defines pre-determined bit bottom tank case that n goes here and there total number; Finally, model fluid is injected in tank case, until its liquid level reaches step 2) in the liquid level markings made, density due to low-density object is less than model fluid and the cascaded structure that low-density object is formed often is gone here and there total length and is all less than liquid level value, now low-density object is uniformly suspended under the liquid level of model fluid, fills complete.
Described low-density object 1 is foam entity or expandable plastic body or shell hollow ball.
The article that low-density object 1 is selected cheapness, is easy to get, as foam entity or expandable plastic body or shell hollow ball, wherein foam density is low, and production cost is low, be widely used in daily life and industry, as disposal plastic cup, shock resistant packaging, heat-barrier material etc.; Expandable plastic body, or the data of the quality of shell hollow ball, volume and mean specific gravity are easy to obtain, convenient calculating.
Described model fluid 2 is water or liquid nitrogen.
The material that water extensively exists as nature, at normal temperatures and pressures, for water white transparency is tasteless nontoxic without dangerous liquid; Liquid nitrogen no color or smell non-corrosiveness, non-combustible, in chemical inertness, density, lower than water, is carried out the simulation of impulse test, not only be ensure that the security of simulation test, also effectively reduce experimentation cost with these material substitution danger medium.
Described liquid level markings B structure comprises reticule C.
The amount being set to filling liquid 2 of liquid level markings B provides reference, and reticule C is set further, during height change for filling liquid, the change of corresponding volume provides reference, to be convenient in testing in real time, quantitatively to detect volume and the change thereof of combining medium.
The structure of described low-density object 1 comprises the latch closure 7 being positioned at its upper and lower two ends, and low-density object 1 connects bunchiness by the nylon cord 6 tied up on latch closure 7, and is positioned, on the vacuum cup 5 on tank body 4 inner bottom surface, to form equally distributed form.
Described low-density object 1 connect bunchiness and the qualifications of pre-determined bit on tank body 4 inner bottom surface be after topping up floats low-density object 1 around center of gravity H
wdistribute symmetrically and evenly.
At the two ends up and down of low-density object 1, latch closure 7 is set, nylon cord 6 ties up on latch closure 7 through latch closure 7 or two ends, low-density object 1 is connected bunchiness, and the tail end of string is connected with vacuum cup 5 with nylon cord 6 by latch closure 7 equally, vacuum cup 5 is evenly positioned at the inner bottom surface of tank body 4.Like this, after being filled with model fluid 2, low-density object 1 will be uniformly suspended in model fluid 2.
embodiment 2
A kind of medium charge method of danger medium tank case impulse test full-scope simulation, also comprise the accurate adjustment after filling in its step as different from Example 1, after determining hybrid analog-digital simulation stuff center of gravity Hw ' position and with the center of gravity H injected under danger medium state
wcompare, H
w' with H
wdistance is s, as error rate Δ H=s/H
0absolute value be greater than 3%, then return from execution the 3rd) step, the position of adjustment low-density object 1 or number N, until Δ H=s/H
0absolute value be less than 3%.
According to the method described in embodiment 1, theoretically, the gross mass of hybrid analog-digital simulation stuff system, all equal when cumulative volume and danger medium filling, and although actual low-density object 1 is for being uniformly distributed, but due to number, volume is not integer sometimes, in addition actual 1 piece, low-density object being equipped with or spheroid and calculating data have deviation, the slight error of the system that can cause, the limits of error is fixed on certain limit and can be similar to the requirement realizing full-scope simulation, considerable influence can't be had to system gross mass to the small adjustment on low-density object 1 cumulative volume because feature that low-density object 1 density is little is known, error is with center of gravity H
wreference by location, namely under the prerequisite that quality, volumetric errors are very little, the position of presumption hybrid analog-digital simulation stuff center of gravity Hw ', with the center of gravity H injected under danger medium state
wcompare in position, if Hw ' and H
wdistance is s, if error rate Δ H=s/H
0absolute value be greater than 3%, then return from execution the 3rd) step, the position of adjustment low-density object 1 or number N, until Δ H=s/H
0absolute value be less than 3%.
embodiment 3
A medium charge method for danger medium tank case impulse test full-scope simulation, N number of in described step 3.2, the pre-determined bit principle of n string low-density object 1 bottom tank case is as different from Example 1: topping up floats rear maintenance with center of gravity H
wfor reference point is symmetrical.
Based on embodiment 1, N number of after topping up, n goes here and there low-density object 1 with center of gravity H
wposition be that symcenter is suspended under the liquid level of model fluid 2, then inevitable, the centre of gravity place of low-density object 1 and liquid 2 is all positioned at H
w, not only achieve simulation stuff system and danger medium quality, volume be equal, also accurately can realize the coincidence of centre of gravity place, effectively ensure that the authenticity of test.
Claims (8)
1. a placement method for danger medium tank case impulse test simulation medium, is characterized in that said method comprising the steps of:
1) determine to participate in the mass M adding danger medium needed for test
0, proportion ρ
0with volume V
0;
2) determine to be filled with mass M in detected tank case
0danger medium time liquid level H
0with center of gravity H
whighly, and make liquid level markings (B);
3) choose two kinds of security medium Homogeneous phase mixing to be filled in tested tank case, wherein two media is respectively proportion ρ
2> ρ
0model fluid (2) and N number of volume be V
1, be immersed in mean specific gravity ρ in model fluid (2)
1< ρ
0low-density object (1), concrete operations are as follows:
The 3.1 total number N=(ρ confirming to submerge required low-density object (1) in model fluid (2)
2-ρ
0) V
0/ (ρ
2-ρ
1) V
1;
N number of low-density object (1) to be connected into n string by rigging by 3.2 respectively, is positioned at often going here and there tail bottom tank case, forms N number of, n and goes here and there low-density object (1) pre-determined bit bottom tank case;
3.3 inject model fluid (2) until liquid level reaches step 2 in tank case) described in bench margin line (B), all low-density object (1) even suspension are under model fluid (2) liquid level.
2. the placement method of a kind of danger medium tank case impulse test simulation medium according to claim 1, it is characterized in that described step also comprises the accurate adjustment after filling, after determining hybrid analog-digital simulation stuff center of gravity Hw ' position and with the center of gravity H injected under danger medium state
wcompare, Hw ' and H
wdistance is s, as error rate Δ H=s/H
0absolute value be greater than 3%, then return from execution the 3rd) step, the position of adjustment low-density object (1) or number N, until Δ H=s/H
0absolute value be less than 3%.
3. the placement method of a kind of danger medium tank case impulse test simulation medium according to claim 1, is characterized in that N number of in described step 3.2, n string low-density object (1) the pre-determined bit principle bottom tank case is: topping up floats rear maintenance with center of gravity H
wfor reference point is symmetrical.
4. the placement method of a kind of danger medium tank case impulse test simulation medium according to claim 1,2 or 3, is characterized in that described low-density object (1) is foam entity or expandable plastic body or shell hollow ball.
5. the placement method of a kind of danger medium tank case impulse test simulation medium according to claim 1,2 or 3, is characterized in that described model fluid (2) is water or liquid nitrogen.
6. the placement method of a kind of danger medium tank case impulse test simulation medium according to claim 1,2 or 3, is characterized in that described liquid level markings (B) structure comprises reticule (C).
7. the placement method of a kind of danger medium tank case impulse test simulation medium according to claim 1, it is characterized in that, the structure of described low-density object (1) comprises the latch closure (7) being positioned at its upper and lower two ends, low-density object (1) connects bunchiness by the nylon cord (6) tied up on latch closure (7), and be positioned, on the vacuum cup (5) on tank body (4) inner bottom surface, to form equally distributed form.
8. the placement method of a kind of danger medium tank case impulse test simulation medium according to claim 7, is characterized in that described low-density object (1) connects bunchiness and the qualifications of pre-determined bit on tank body (4) inner bottom surface is topping up floats rear low-density object (1) around center of gravity H
wdistribute symmetrically and evenly.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310619390.6A CN103712762B (en) | 2013-11-29 | 2013-11-29 | Danger medium tank case impulse test simulation medium placement method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310619390.6A CN103712762B (en) | 2013-11-29 | 2013-11-29 | Danger medium tank case impulse test simulation medium placement method |
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| Publication Number | Publication Date |
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| CN103712762A CN103712762A (en) | 2014-04-09 |
| CN103712762B true CN103712762B (en) | 2016-03-23 |
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| CN201310619390.6A Active CN103712762B (en) | 2013-11-29 | 2013-11-29 | Danger medium tank case impulse test simulation medium placement method |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109870312A (en) * | 2019-02-26 | 2019-06-11 | 滁州永强汽车制造有限公司 | A kind of super steady experimental provision of tank truck |
| CN114518296B (en) * | 2022-01-17 | 2022-10-25 | 浙江尤科斯纺织科技股份有限公司 | Impact resistance test device for impact-resistant cylindrical hollow wiredrawing cloth and use method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1405966A1 (en) * | 2002-08-19 | 2004-04-07 | Vandenborre Technologies N.V | Outletstation for hydrogen |
| US7255008B2 (en) * | 2005-04-07 | 2007-08-14 | Imv Corporation | Vibration-testing system |
| JP4523631B2 (en) * | 2007-11-30 | 2010-08-11 | 東洋ガラス株式会社 | Water bottle strength test method and apparatus for glass bottle |
| CN202255813U (en) * | 2011-08-31 | 2012-05-30 | 中国汽车技术研究中心 | Low-temperature impact testing stand for automobile plastic fuel tank |
| CN102768105A (en) * | 2012-07-27 | 2012-11-07 | 公安部第一研究所 | System and method for evaluating use safety of anti-explosion container |
-
2013
- 2013-11-29 CN CN201310619390.6A patent/CN103712762B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1405966A1 (en) * | 2002-08-19 | 2004-04-07 | Vandenborre Technologies N.V | Outletstation for hydrogen |
| US7255008B2 (en) * | 2005-04-07 | 2007-08-14 | Imv Corporation | Vibration-testing system |
| JP4523631B2 (en) * | 2007-11-30 | 2010-08-11 | 東洋ガラス株式会社 | Water bottle strength test method and apparatus for glass bottle |
| CN202255813U (en) * | 2011-08-31 | 2012-05-30 | 中国汽车技术研究中心 | Low-temperature impact testing stand for automobile plastic fuel tank |
| CN102768105A (en) * | 2012-07-27 | 2012-11-07 | 公安部第一研究所 | System and method for evaluating use safety of anti-explosion container |
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